623073720 has 64 divisors (see below), whose sum is σ = 1914827040. Its totient is φ = 162099200.

The previous prime is 623073719. The next prime is 623073721. The reversal of 623073720 is 27370326.

It is an interprime number because it is at equal distance from previous prime (623073719) and next prime (623073721).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623073721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58401 + ... + 68240.

Almost surely, 2^623073720 is an apocalyptic number.

623073720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

623073720 is an abundant number, since it is smaller than the sum of its proper divisors (1291753320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

623073720 is a wasteful number, since it uses less digits than its factorization.

623073720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126696 (or 126692 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 30.

The square root of 623073720 is about 24961.4446697302. Note that the first 3 decimals coincide. The cubic root of 623073720 is about 854.1086980714.

The spelling of 623073720 in words is "six hundred twenty-three million, seventy-three thousand, seven hundred twenty".